Adjustable cultivator-tooth.



No. 714,642. Patented Nov. 25, I902.

, 2 F. a. HOAG.

ADJUSTABLE BUL'I'IVA'TOR TOOTH.

Amma filed Aug. 20, 1902.

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zen of the United States, and a resident of sists in the constructionand arrangement of NlTED TATES FRANK G. HOAG, OF BATTLEOREEK, MICHIGAN.

ADJUSTABLE CU LTlVATOR=-TOOTH.

SPECIFICATION forming part of Letters Patent No. 714,642, dated November 25, 1902. Original application filed March 4, 1902, Serial No. 96,610. Divided and this application filed August 20, 1902. Serial To all whmn it may concern:

Be it known that I, FRANK G. HOAG, a citi- Battlecreek, in the county of Calhoun and State of Michigan, have invented a new and Improved Adjustable Cultivator-Tooth, of which the following is a full, clear, and exact description. 1

I My invention relates to improvements in adjustable cultivator-teeth; and the subject matter of this application constitutes adi vision of a prior application for improvements in cultivators filed by me on March 4, 1902, Serial No. 96,610.

One object of the present invention is the provision of means for securely fastening the tooth of a cultivator to the machine-frame; and a further object is to allow the holding device and the tooth to be shifted back and forth on the frame, whilethe tooth can be adjusted vertically without disturbing theposition of theholder, whereby the position of the tooth can be regulated at will.

A further object is to provide a simple and strong construction which may be manufactured cheaply, which is easily applied to or removed from the machine-frame, is durable and efficient in service, and can be adjusted in the proper directions with facility and ease.

With these ends in View the invention conparts which will be hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of a cultivator of the class disclosed by my prior application and showing a series or gang of my improved adjustable cultivator-teeth applied thereto. Fig. 2 is an enlarged elevation of the cultivator-tooth applied to a part of the frame-bar. Fig. 3 is a transverse sectional elevation on the line 33 of Fig. 2, and Fig. 4 is a plan view of the part shown by Fig. 2.

In the present invention I employ a clamp consisting of the members 5 6, adapted to be held laterally on a suitable frame and to firmly ho'ldthe tooth therein. The member 5 of the clamp is in the form of a flat plate (No model.)

which is considerably thicker than the member 6, and this thickened flat member 5 is provided in one side or face thereof with a recess 7, the latter opening through the front and back edges of said clamp member. Said member is furthermore provided with a vertical socket 8, (shown by dotted lines in Fig. 3,) said socket extending centrally through the thickened member and opening through the top and bottom edgesthereof. tical socket is disposed quite close to the recess 7, and said socket may open into or communicate with this recess for a part of its length. The other clamp member 6is in the form of a fiat plate and arranged to be applied laterally against that side of the member 5 having the recess 7. The two members 5 6 are secured together by a series of bolts 9, which pass through the members nearthe corners thereof and outside of the recess 7.

1O designates a cultivator-tooth, which is preferably of the form shown by Figs. land 2that is to say, the tooth is curved nearly throughout its length, while the upper portion thereof is bent at 11 backwardly upon itself to form the arm 12, which lies over the curved part of the tooth and is spaced relatively thereto. This arm 12 of the tooth is provided with an upstanding shank 13, whichis adapted to fit snugly in the vertical socket 8 of the clamp member 5. cured adj ustably in the socketed clamp member by a binding-screw 14, which is mounted in a threaded or tapped opening of said clamp member and is adapted to impinge the shank. In the raised position of the tooth shown by the drawings the arm 12 bears against the under side of the clamp member 5; but it is evident that the tooth may be lowered by moving the shank 13 downwardly in the socket8 of the clamp member 5, after which the clamping-screw 14 should be tightened against the tooth-shank in order to hold the tooth firmly in its adjusted position.

In Fig. 1 a part of the tooth-carrying frame is indicated at A, said frame being of an oval shape in plan view, as disclosed by my prior application. This frame is suitably connected to a carrying-frame, (indicated generally at 13,) and this carrying-frame is equipped with the ground-wheels O. The machine shown This ver- This shank is sej to an agricultural machine; but it isevident that the improved adjustable tooth may be used on any desired form of cultivator.

My improved tooth isadapted to be shifted back and forth on the carrying-frame A and to be adjusted Vertically with respect thereto.

The clamp is easily applied to the frame A by first fitting the member 5 laterally thereto in a manner to receive a part of the frame in the recess 7, after which the member 6 is applied to the opposite side of the frame, and the bolts 9 are attached to the members in a manner to couple them together and d raw them firmly against the frame-bar. The clamp cannot become displaced vertically on the frame, be cause the latter is received in the recess 7 in a manner to have firm bearing against the flanges of the clamp member 5, which are formed by said recess. The clamp is held against displacement in a horizontal plane on the frame-bar by the bolts drawing the two members 5 6 laterally into tight engagement with'said frame-bar. The shank of the tooth is held firmly in the clamp member 5 by the binding-screw 14; but, if desired, the shank may have lateral engagement with the frame-- bar A, because the socket 8 may communicate with the recess 7, thus permitting the shankto be clamped laterally by the bolts 9, which draw the parts firmly together.

Having thus described my invention, I

claim as new and desire to secure'by Letters Patent.

1. An adjustable cultivator-tooth comprising a flat clamp member provided in one side with a recess which opens laterally through the end edges and one face of the same, and also provided with avertical socket, another flat clamp member applied laterally to that side of the socketed member having said recess, means for securing the two members detachably together, a tooth having a shank fitted in the socket of the first clamp member,

and means for adjustably securing the toothshank in place.

2. An adjustable cultivator-tooth, comprising a thick fiat clamp member provided with a recess in one side and with a vertical socket at one sideof said recess, a flat clamp mem-.

FRANK G. HOAG.

Witnesses:

FRED R. DOWSETT, ARZA ROBINSON. 

